十万火急!英语单选With so little time ______ on math,it is all too ea
十万火急!英语单选 With so little time ______ on math,it is all too easy for children to ignore practicing mathematics,which is a kind of language. A.spent B.being spent C.to spend D.was spent 应该选什么? 这道题为什么不能选B? 介词 with 后不是用ing形式吗?